9cm and without drainer even 13 cm. Have fun with this "miracle machine".

As rrubin has already mentioned, exactly this mass.

However, if you raise the machine (e.g. capsule drawer; https://www.digitec.ch/de/s1/product/durable-coffee-point-box-s-280-x-95-x-356-mm-dokumentenablage-8930922), you can also cheat a little and use higher cups or glasses (latte macchiato) without a drip tray.

My Nespresso Essenza Mini is just under 19 cm high. However, when using this height, I have to pull the machine forwards to the edge of the drawer for a short time. I have a deeper drawer than the one in the example link.

Yes.